Setaria is a genus of flowering plants in the family Poaceae, commonly known as the grass family. It includes various species, many of which are found in tropical and subtropical regions. Setaria plants are characterized by their upright growth and distinctive flower spikes, which can be feathery or bristly in appearance. Some species of Setaria, such as Setaria italica, are cultivated as crops for their seeds, which are used for food and animal feed. Others may be considered weeds in agricultural settings. Overall, Setaria plays a role in both ecology and agriculture, contributing to biodiversity and food production.